Kammprofile Gasket · Basic Style (LP1) · China Manufacturer
Kaxite Basic Style Kammprofile Gasket is a serrated metal core gasket without a guide ring, manufactured for tongue and groove, recessed and Male and Female flange applications. The sealing core consists of a solid metal plate with concentric serrations on both sealing surfaces, faced with flexible graphite, EPTFE or HTG soft facing. This combination provides one of the tightest seals available with superior load bearing characteristics, especially at low seating stress.
A Kammprofile gasket is built from two materials that act together. The solid metal core carries the load and resists blow-out. The soft facing on the outside of the serrations fills the micro-irregularities on the flange surface and creates the actual seal.
The simultaneous action of a highly compressible facing material on the outside, combined with limited penetration of the tips of the solid metal core into the facing, allows the two materials to perform individually at their optimum capability. This is why Kammprofile gaskets hold well at low bolt load and continue to hold under cyclic thermal conditions.
The Kammprofile seal core is the same across the three styles. The difference is how the gasket is centred and supported on the flange. Choosing the wrong style is one of the most common causes of poor sealing. The other two styles are also produced by Kaxite and can be reviewed on the Kammprofile Gaskets category page.
Manufactured without a guide ring. Used in tongue and groove, recessed and Male and Female flange applications. Typically applied in heat exchangers and as an upgrade to double jacketed gaskets when lower bolt load is needed.
Suggested action: machine out the nubbin (if present) before installing LP1 in heat exchanger service.
Constructed with an integral inner guide ring for aligning purposes. Suggested for raised face flanges. The sealing core is designed and sized per EN-12560-6, and the guide ring is sized to fit the flange specification.
Related product: Kammprofile Gasket with Integral Outer Ring
Uses a loose outer ring. Preferred for nominal pipe size and pressure class raised face flanges, and for equipment with excessive radial shear characteristics, thermal cycling and expansions. The sealing core is per EN-12560-6 and the guide ring is sized to suit the flange specification.
Related product: Kammprofile Gasket with Loose Outer Ring
Unsure which style fits your flange? Send the flange drawing. Kaxite can die-cut the LP1, LP2 or LP3 style against the same drawing and quote all three side by side.
The Kammprofile Basic Style is a recognized problem solver for heat exchanger head and shell joints. It is used as an upgrade to double jacketed gaskets where lower bolt load is needed.
Suitable for large vessels and equipment that experience excessive movement due to thermal expansion, where a solid metal core with soft facing holds torque better than a compressed fibre sheet.
The Basic Style is manufactured without a guide ring specifically for tongue and groove flanges, where the groove provides the centring and the gasket only needs to seal.
Also used in recessed and Male and Female flange joints where the recess provides the centring. Standard for certain heat exchanger and valve bonnet connections.
The serrated metal core bites into the soft facing, so sealing is achieved at lower seating stress than a compressed sheet or double jacketed gasket.
The solid metal core carries bolt load without crushing, giving better torque retention and less re-torque after thermal cycling.
Preferred for heat exchangers and vessels that move due to thermal expansion, where sheet gaskets relax and start leaking.
Upgrade path from double jacketed gaskets where lower bolt load is available or where reliability must improve.
Core and facing are chosen separately. High temperature uses graphite facing; aggressive chemical service uses EPTFE facing.
Kaxite can produce non-circular and custom-engineered shapes efficiently with high accuracy for bonnet and special flange connections.
Send flange size, pressure class, core material, facing material, thickness, quantity and destination port.
Kaxite reviews the flange drawing and replies with an FOB Ningbo quotation, lead time and packing options.
Solid metal core is turned or milled to the required dimensions, then serrated on both sealing surfaces with concentric grooves.
Flexible graphite, EPTFE or HTG facing is applied and pressed into the serrations to the required facing thickness.
Core dimensions, facing thickness, serration pitch and surface flatness are checked against the buyer approval drawing.
Gaskets packed flat with edge protection, tagged per size and per style. Shipped with packing list, invoice and material cert if required.
Core material certificate (SS316, SS304, SS316L, Monel, Inconel etc.) and facing material data sheet provided per order.
Core ID/OD, facing thickness, serration pitch, and where applicable guide ring dimensions recorded against drawing tolerance.
LP1, LP2 and LP3 gaskets are tagged separately per size and per style to avoid mix-up during installation.
Gaskets packed flat with protective interlayers. Non-circular and large diameter gaskets are packed in wooden cases.
Full range of LP1, LP2 and LP3 Kammprofile gaskets.
Fully welded guide ring for higher radial shear service.
LP3 style with a loose outer ring for NPS and Class raised face flanges.
Spiral wound, ring joint, expanded graphite and other industrial gaskets.
Kammprofile Gasket Basic Style (also called Kammpro LP1) is a serrated metal core gasket without a guide ring. It is manufactured for tongue and groove, recessed, and Male and Female flange applications, especially in heat exchangers, and is typically used as an upgrade to double jacketed gaskets when lower bolt load is needed.
Basic Style (LP1) is manufactured without a guide ring for tongue and groove and recessed flanges. Inner Ring Style (LP2) is constructed with an integral inner guide ring for aligning purposes on raised face flanges. Outer Ring Style (LP3) uses a loose outer ring and is used for nominal pipe size and pressure class raised face flanges, especially where there is excessive radial shear, thermal cycling or expansion.
The sealing core is typically SS316, but SS304, SS316L, SS321, Monel, Inconel and other alloys are available. The soft facing is usually flexible graphite, EPTFE or HTG configuration, chosen based on operating temperature, pressure and chemical media.
The suggested flange surface finish for Kammprofile gaskets is 125-250 RMS. A smoother finish may reduce the mechanical grip between the serrations and the flange surface, while a rougher finish may leave leak paths.
Kammprofile gaskets with a graphite facing can be applied up to 1500°F (approximately 815°C), depending on the core material and facing material. EPTFE facing has a lower temperature limit and is used for chemical resistance rather than high temperature.
Yes. Kaxite can produce non-circular Kammprofile gaskets and custom-engineered gaskets to fit bonnet connection shapes and other non-standard flange profiles. Send a drawing or sample for quotation.
Send flange size, pressure class, core material (SS316, SS304, SS316L etc.), facing material (flexible graphite, EPTFE, HTG), thickness, quantity and destination port. Kaxite will reply with FOB Ningbo quotation, lead time and packing details.
Send your flange drawing, pressure class, core material and facing preference. Kaxite will prepare an FOB Ningbo quotation and can quote LP1, LP2 and LP3 styles side by side against the same drawing.
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No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
